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BBB 2023 - Grade 1 - Preliminary Round Question 3

BBB · BBB 2023 - Grade 1 - Preliminary Round

Question 3

According to the pattern, which number should be filled into the box?

$7,\ 10,\ 13,\ 16,\ \boxed{\phantom{19}},\ 22,\ldots$
  1. 17
  2. 18
  3. 19
  4. 20